Asked by @MRXVG: @WhatCultureWWE Why do they always book the heel champ as a coward. Well more like heels in general. This is why I love Strowman monster.
This completely depends on the guy in the role. Seth Rollins lends himself to this character because he isn't the biggest guy, while he has that sort of 'brattish' nature that is really unlikable in his promos. At the end of the day he simply isn't commanding as a heel - like his mentor Triple H was back in the day - and WWE needs to get heat on him some way. Having him squirm out of even the tightest of situations is the way they've chosen to go and you can't blame them for that. Admittedly, they have taken things a bit too far with Seth and made him look weaker than a polystyrene table, putting him in positions no bonafide WWE Champion should be put in. Braun Strowman is being booked as he is because it is the right thing he do. He's a monster, so he's being portrayed as a monster. You couldn't see a man of Rollins' size and attributes mauling a man of Braun's size, could you?